一种变速箱壳体粘砂的防治  

Prevention and Control of Burning-On of a Transmission Housing Casting

作　　者：张百堂 卢吉成 贺亮明 钟志新 高为君 

机构地区：[1]广东富华铸锻有限公司,广东新会529147

出　　处：《铸造》2016年第5期473-475,481,共4页Foundry

摘　　要：根据铸件产生粘砂的机理,对某铸铁变速箱壳体粘砂进行了分析,确认其为机械粘砂。通过采取一系列措施,消除了变速箱壳体粘砂缺陷,并实现了稳定生产。结果表明:在铸型毛细管通畅的前提下,采取减小金属液渗透压力的方法是防止机械粘砂的一条重要措施;同时减少铸型内气体的产生或者充分设置排气道,是生产优质铸件必不可缺少的条件。According to the forming mechanism of the burning-on, the burning-on defects of the transmission housing were analyzed and determined to be metal penetration. Through a series of measures, the defects were eliminated, and stable production was realized. The results show that it was an important measure to decrease the osmotic pressure of the melt that will prevent the metal penetration; at the same time, to reduce the gas in the mold and fully set the vent is the indispensable condition to produce the high quality casting.

关 键 词：机械粘砂 气体 金属液 排气道 

分 类 号：TG245[金属学及工艺—铸造]